A bear runs through smoke in the Sierra foothills in Sierra National Forest, Calif, on Tuesday, July 29, 2014. Fire crews gained ground Tuesday on two of the largest wildfires in California, lifting evacuation orders for about half the homes in the path of a blaze in Yosemite National Park and redeploying firefighters battling another fire in the Sierra Nevada foothills east of Sacramento.

Bear Bolts Through Smoke-Filled California Forest

A photo distributed by the Madera County Sheriff's department shows a bear running through smoke in the Sierra foothills in Sierra National Forest, Calif., on Tuesday. Fire crews gained ground Tuesday on two of the largest wildfires in California, lifting evacuation orders for about half the homes in the path of a blaze in Yosemite National Park and redeploying firefighters battling another fire in the Sierra Nevada foothills east of Sacramento.